[Bug target/104946] [12 regression] Suboptimal gimple foding for blendvpd under sse4.1

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104946

Hongtao.liu <crazylht at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Target|                            |x86_64-*-* i?86-*-*

--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
I think we should restrict gimple folding for __builtin_ia32_blendvpd under
TARGET_SSE4_2.

For other blendv builtins, corresponding vec_cmp is available as long as
builtin isa matches.